10-
I
NSPECT
I
ON
AND MAINTENANCE CHECKLIST
#
Maintenance work
Interval
1
Record all of the analysis results in the Benchmark service record in
these instructions
Annually
2
Ask the end user whether any significant problems occur when operating
the product
Annually
3
Use the diagnostics system to check the product's fault history
Annually
4
Visually inspect whether the air/flue pipe and its opening have been in-
stalled correctly in accordance with the set-up instructions
Annually
5
Check that the unit has been installed correctly and the connections have
been secured
Annually
6
Check all of the connections for tightness
Annually
7
Check that the condensate pipe is in good condition, that it is leak-tight
and that the drain is correct
Annually
8
Check whether all of the externally routed condensate pipes are dimen-
sioned correctly and have been insulated sufficiently (frost protection)
Annually
9
Check whether the gas flow rate corresponds with the specifications on
the data plate and lies within the tolerances specified in these instructions
Annually
10
If the gas flow rate lies outside of the tolerances specified in these in-
structions, eliminate the fault in accordance with the regulations and the
current technology
Annually
11
Check the general condition of the product and, if required, eliminate any
faults that are found
Annually
12
Carry out the combustion analysis: Measure the CO content, CO
₂
content
and the CO/CO
₂
ratio. For products with a rear air/flue connection: The
combustion analysis can only be carried out when the unit casing has
been removed; it is not necessary to test these products for flue gas recir-
culation
Annually
13
Check the product's recirculation at the supply air test point on the air/flue
pipe. If required, inspect the entire air/flue system and, if necessary, cor-
rect the fault
Annually
14
Disconnect the product from the electrical installation
Annually
15
Check and, if required, correct the electrical installation
Annually
16
Remove the unit casing, check the condition of all of the functional com-
ponents, in particular for leaks, corrosion, rust, etc. and, if required, repair
any damage
Annually
17
Visual inspection of the heat exchanger and burner seals
. If required,
replace the seals.
18
Carefully clean the inside of the product: The air passages to the burner
must be clear and clean
Annually
19
Close the installation's gas stopcock and, if required, service valves
Annually
20
Check the quality of the heating water: Clarity (clouding), correct inhibitor
and pH value
Annually
21
Checking the burner
Annually
22
Check and, if required, clean the ignition electrode
at regular intervals
23
Check and, if required, replace the insulating mat in the burner area
at regular intervals
25
Cleaning the condensate trap
Annually
Annually
71
2
4
Cleaning the heat exchanger
at regular intervals
